Patents by Inventor Randy Owen Knapp

Randy Owen Knapp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6166481
    Abstract: A spark plug (100) includes a ground electrode (125), a firing electrode (115), an insulator core (105) having an insulator core nose (120), and an outer shell (110) surrounding the insulator core (105). The improvement includes the insulator core nose (120) including a high temperature glaze applied to an outer surface of the insulator core nose (120) and the high temperature glaze composition. The composition includes, by weight:(i) between about 72 and 84% SiO.sub.2 ;(ii) between about 10 and 20% Al.sub.2 O.sub.3 ;(iii) between about 2.0 and 2.5% K.sub.2 O;(iv) between about 0.50 and 0.65% Na.sub.2 O;(v) between about 3.0 and 5.5% CaO;(vi) between about 0.1 and 0.25% MgO; and(vii) the remainder impurities.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: December 26, 2000
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Randy Owen Knapp, Daniel Lee Tribble, Robert Scott Ingham
  • Patent number: 5985473
    Abstract: A barium/lead-free ceramic glaze includes by weight:(i) between about 44 and 50% SiO.sub.2 ;(ii) between about 7 and 13% Al.sub.2 O.sub.3 ;(iii) between about 22 and 26% B.sub.2 O.sub.3 ;(iv) between about 3 and 9% CaO;(v) between about 1 and 3% SrO;(vi) up to about 2% ZnO;(vii) between about 2 and 4% K.sub.2 O;(viii) up to about 2% Li.sub.2 O; and(ix) between about 5 and 9% Na.sub.2 O.This barium/lead-free glaze can be effectually applied to a ceramic substrate at firing temperatures on the order of 1550 to 1650.degree. F. (843 to 899.degree. C.).
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 16, 1999
    Assignee: Cooper Automotive Products, Inc.
    Inventor: Randy Owen Knapp